I saw the following somewhat strange error on a couple of messages on my
workstation today:
2024-12-16 09:33:14 1tN6XS-005xey-1D <= netdata@butla U=netdata P=local
S=40279
2024-12-16 09:33:14 1tN6XS-005xey-1D Spool error for
/var/spool/exim4//input//1tN6XS-005xey-1D-D: Permission denied
2024-12-16 10:02:17 1tN6XS-005xey-1D => porridge <root@butla> R=procmail
T=procmail_pipe
[some more (remote) deliveries, all succeeded]
2024-12-16 10:02:19 1tN6XS-005xey-1D Completed
When I looked for more, I found another handful of these this and last week
on the same system, and a couple more on another machine.
Each time, it seems like the "Spool error" was emitted during the initial
(immediate) delivery attempt. When it was retried as part of a periodic
mail queue run, it did not happen again. Also each time it seems the sender
was the local netdata daemon (
https://github.com/netdata/netdata).
The permissions for the directories in /var/spool/exim4 seem OK, and I
don't think anything was changing them in the recent past.
What could it be? It would have been helpful if the error message
mentioned what was the attempted operation...
This is exim 4.96-15+deb12u6 on Debian 12 (bookworm) systems.
Marcin
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